The ISO have developed a set of standards for invoking operations
and an accompanying external data representation standard for
and parameter typing called Remote Operations Service (ROS)
and Abstract Syntax Notation 1 (ASN.1).
ROS is not strictly an RPC system, especially since it defines no
order on requests and replies.
ROS and ASN.1 is described in some detail in chapter 7.
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RPC systems started out with the marvelous work of Birrell and Nelson
at Xerox PARC. Since then, they have got larger and slower almost
exactly as fast as workstations have got faster, so that today, we see
typical ROS or RPC performance almost no different from that achieved
at the beginning of the 80s. There seems little explanation for this,
but a remarkably similar thing has happened to operating systems and
Window Systems at the same time.
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